import mapper.UserMapper;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import pojo.User;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

public class MybatisDemo03 {
    public static void main(String[] args) throws IOException {
//        操作Mybatis的四个步骤：
//        1.加载mybatis-config配置文件，创建工厂类
        InputStream is = Resources.getResourceAsStream("mybatis-config.xml");
        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(is);
//        2.创建SqlSession
        SqlSession sqlSession = factory.openSession();
//        3.执行SQL语句
        UserMapper usermapper = sqlSession.getMapper(UserMapper.class);
        User oneUser = usermapper.selectOne(1);
        System.out.println(oneUser);
//        4.关闭SqlSession
        sqlSession.close();
    }
}
